METHOD FOR REPAIRING WELDED PORTION OF HOT DIPPED ZINC-ALUMINUM ALLOY COATED STEEL MATERIAL, AND WELDED STRUCTURE

摘要

A method for repairing a welded portion, which provides excellent adhesion of a repairing material and excellent corrosion resistance of a bonded portion and surrounding portions thereof is proposed, and a welded structure subjected to the repair is provided. Specifically provided is a method for repairing a welded portion of a hot dipped zinc-aluminum alloy coated steel material, which is characterized in that: a first spray layer is formed by spraying an Al-Si alloy on the upper layer of a welded portion of a hot dipped zinc-aluminum alloy coated steel material; a second spray layer is formed by spraying a Zn-Al alloy on the first spray layer; and the spray layers and portions surrounding the spray layers are preferably coated with an inorganic and/or organic antirust treatment layer.